Illinois · FIPS 17199
Williamson County, IL
Quick answer
Williamson County is home to 66,902 residents with a median household income of $65,521 and a median home value of $145,600. 71.1% of households own their home and 14.3% of residents live below the poverty line.
- Population
- 66,902Williamson County residents
- Median household income
- $65,521Past 12 months, inflation adjusted
- Median home value
- $145,600Owner-occupied units
- Median gross rent
- $897Rent plus utilities, monthly
- Median age
- 41.4 yrsAll residents
- Homeownership rate
- 71.1%Owner-occupied households
ZIP codes in Williamson County
ZIP code tabulation areas whose land area falls mostly in Williamson County.
How to read this page
What these estimates cover.
Figures are five-year rolling averages from the American Community Survey, not single-year counts, so they describe conditions across 2019-2023 ACS 5-year rather than a single date. Median home value covers owner-occupied units as valued by their owners, and median gross rent includes utilities the renter pays. Small counties carry wide margins of error; treat single-dollar differences between neighbouring counties as noise.
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
Nearby counties
Other counties in Illinois.